con =new OleDbConnection("Provider=OraOLEDB.Oracle;Data Source=emr5;User ID=emr;Password=emr");
// OleDbCommand myCommand = new OleDbCommand("DisFinalhello",myConnection);

 daCust=new OleDbDataAdapter("select * from UserList", con);
ds=new DataSet();

daCust.Fill(ds,"Customers");

//bind a DataGrid
this.dataGrid1.DataSource=ds.Tables["Customers"]; // Bind the controls.
textBox1.DataBindings.Add("Text", ds.Tables["Customers"],"IdentityCol");
textBox2.DataBindings.Add("Text", ds.Tables["Customers"],"actualPassword");
textBox3.DataBindings.Add("Text", ds.Tables["Customers"],"actualPassword"); //Initialize the CurrencyManager.
cm=(CurrencyManager)this.BindingContext[ds.Tables["Customers"]];